Clasp



N. A. ELLIN.

CLASP. F1 LED APR. 24, 1922.

lllgllllll INVENTOR. MM 425@ ATTORNEY Patented Dee. 2d, i922.

,hasta y NICHOLAS A. ELLIN, OF PROVIDENCE, RHODE lISLAND, ASSIGNOR TOEKELUND BRGTHEBS, OF PROVIDENCE, RHODE ISLAND, A FIRM.

CLASP.

Application filed April 24,

To all 'Lofi/0m t may concerti.'

.Be it known that l', Nici-roms A.. ELLIN, a citizen of the llnitedStates, residing at Providence, y.in the county ot Providence and 5State ot' Rhode lsland, have invented certain new and use'lullmprovements in Clasps, oit which the following is a specification.

My invention relates to a clasp for necklaces rand other articles `ofjewelry, and has for its essential objects the prevention ot completedetachment ot the clasp parts when the parts are accidentally partiallydisen-` gaged, and to the attainment ot this end in an inexpensivelyconstructed, strong, sightlyk device.

To the above ends essentially my invention consists in such parts and insuch combinations ot parts as tall within the scope ot the appendedclaim.

ln the accompanying drawings which torni a part oit thissyriecilication,

lligures l, 2, and 3 are a iront elevation, ay rear elevation, and aplan view respectively o1c a clasp embodying my invention,

'Figures 4l and 5, sectionson line l--l olf `Figure 3, showing the partsin locked and .in semiengaged positions resigiectively, and

Figure 6, a section on line 6-6 ot llligure 5.

Like reference characters indicate` like parts throughout the views. Inits present and preferred form of embodiment my invention comprises ahousing casing 8 comprising a iront wall 9, a rear wall l0, and anelliptical periphery or side wall ll uniting the same.

ll ast to oneend ci the casing 8 by sclde` or otherwise is an attachingring 13. At the other casing end is a slot l5 in the side ll. 40 Thisslot isi contnnious with a longitudinal opening); 16 in the rear wallcommunicating centi-elly ot a transverse opening i7. The openings .llland 17 constitute a T shaped slot, y

The locking member 19 of the clasp comprises a transverse strip 20centrally of whose edge extend two normally spaced laterally resilientpreferably diverging arms 2l 1922.` Serial No. 556,218.

having upon their tree ends lateral lingers 23, upon one of which is anattaching ring 24C. The parts 20', 2l, 23,and 24e are integrallyconnected and cut from a single thin metal blank. The laterallyprojecting lockingstrip 2O is initially insertable into the casing bypassing 'through the opening ll which is narrower than the strip but ofslightly greater length. Hence in inserting thev strip the arm Ql'mustbe disposed at an angle tothe plane ot the back' 10. Alfter the portion2O` enters the casing the arms 2l next moved into the plane of thecasing through the slot 16, which is slightly broader than the combinedwidth ot the arms, and into slot l5. lllhe member 19 is next pushedinwardly through the slot l5 whereby the arms 21 are compressed by thebounding edges 27 oit the side wall until said edges snap `into thenotches 26, whereby the parts are retained in locked position.

Il the parts are accidentally detached such detachment is incomplete asshown in Figure 5, because the strip 2() engages the interior ot theside wall ll. The lingers 23 are manually compressed where itis soughtto` detach the parts, and a reversal ci the above described stepscompletely separat/es the clasp parts.

l claim ln ajewelry clasp, a casing comprising a Jfront wall, a backwall provided with a T shaped slot, and a peripheral wall provided witha transverse slot registering with the first slot, and a locking membercomprising a transverse strip within the casing, laterally yielding armsintegral with one lateral edge of the str-ip slidable through thetransverse` slot andprovided with lateral notches adapted to receiveportions or' the peripheral wall bounding said slot, hlngers on thertree ends ot' the arms, an attaching ring supported by one of the arms,and au attaching ring on the casing.

ln testimony whereof l have affixed my signature.

NICHOLAS A. ELLIN.

